
SMC CD55B2025 (CD55B20-25) - Compact Air Cylinder, 20mm Bore, 25mm Stroke
SMC CD55B2025 Compact Air Cylinder — 20mm bore, 25mm stroke, female rod end thread. SMC CD55B20-25 ISO 21287 compact air cylinder, double acting, single rod, with 20 mm bore and 25 mm stroke. Auto switch mountable (built-in magnet), standard female rod end thread. Rubber bumper cushion both ends. Non-lube pneumatic operation on air. Max operating pressure 1.0 MPa, min 0.05 MPa, proof pressure 1.5 MPa. Piston speed 50 to 500 mm/s. Ambient/fluid temperature -10 to 70 C without auto switch, -10 to 60 C with auto switch.
MPN: CD55B20-25 · SKU: CD55B2025
CD55B20-25 Applications
A general-purpose short-stroke actuator for automation machinery, assembly stations and pick-and-place equipment where compact mounting is important. The standard female rod end thread accepts screwed-in attachments, and the built-in magnet lets auto switches on any of four sides confirm end-of-stroke position for dependable machine sequencing.
CD55B20-25 Specifications
| Brand | SMC | Manufacturer Part No. | CD55B20-25 |
| Bore | 20 mm | Stroke | 25 mm |
| Series | C55 | Standard | ISO 21287 |
| Action | Double acting, single rod | Rod End | Female thread (standard) |
| Cushion | Rubber bumper both ends | Fluid | Air |
| Max Operating Pressure | 1.0 MPa | Min Operating Pressure | 0.05 MPa |
| Proof Pressure | 1.5 MPa | Piston Speed | 50 to 500 mm/s |
| Ambient/Fluid Temperature | -10 to 70 C (without auto switch), -10 to 60 C (with auto switch) | Auto Switch | Mountable (built-in magnet) |
CD55B20-25 Datasheet & Manual
Download Datasheet & ManualSMC CD55B2025 · PDF · Official SMC documentTrusted by




